selections is seen as an improvement in sustainability for UHSC. Two mixtures (one with and one without fibers) were recommended as the UHSC mixtures. The greatest compressive strengths obtained in this study were 24‚010 psi (165.6 MPa) for UHSC with steel fibers and 23‚480 psi (161.9 MPa) for UHSC without fibers. The compressive and flexural strengths obtained from the UHSC mixtures developed in this work are comparable to UHSC strengths presented in the literature. Producing this innovative
Premium Concrete
7166M01.qxd_lb 6/3/09 09:38 AM Page 1 1 BASIC CONCEPTS 1.1 INTRODUCTION Concrete is strong in compression‚ but weak in tension: its tensile strength varies from 8 to 14 percent of its compressive strength. Due to such a low tensile capacity‚ flexural cracks develop at early stages of loading. In order to reduce or prevent such cracks from developing‚ a concentric or eccentric force is imposed in the longitudinal direction of the structural element. This force prevents the cracks
Premium Concrete Structural engineering
combustible gases. Fresh air for combustion is heated to about 1400 degrees Fahrenheit. According to Thermodynamic Laws‚ by heating the air in a closed space with constant volume at room temperature to 1600 degrees F.‚ the pressure is increased about to 50 psi. In order
Premium Internal combustion engine Gasoline
Chemistry June Exam Notes Quantities in Chemical Reactions Molecular and formula mass o The mass of one unit of a compound (a molecule or a formula unit) o The sum of the mass of all the atoms in a compound o With knowledge of the mass of each individual atom‚ the percentage composition by mass can be determined The Mole (mol) o A counting unit‚ one mole refers to 6.02 x 1023 particles of any given substance o Known as Avogadro’s Constant and given the symbol NA Molar Mass o The
Premium Solubility Ideal gas law Mole
Synthesis of organic compounds such as glucose from inorganic carbon dioxide and water using light as an energy source. This is also known as photoautotrophic nutrition. Carbon dioxide is an energy poor compound which is reduced during photosynthesis There are two main stages: 1. The light dependent reactions that occur on the granal membranes. Pigments are required to absorb and transduce the light energy. Membrane proteins act as electron carriers. 2. The light independent reactions that occur
Free Photosynthesis
tests where viscous fluid is used‚ at RPI the Porous Stone of the sensor is replaced with filter paper. - Estimate the maximum expected pore pressure to be measured during the test and select the appropriate range for the PPT (10‚ 50‚ 100 or 200 PSI). Also‚ according to the location of the sensor determine to use a PPT with a thick cable (Model GE Druck PDCR 81) or with a thin cable (Model GE Druck PDCR 81-3478). For more information about this miniature http://www.gesensing.com/druckproducts/
Premium Pressure Data acquisition Atmospheric pressure
know the elements of life – and how the reduction and oxidative of some of these drive bioenergetics oxidize carbon (i.e. glucose source) and reduce oxygen (electron acceptor) (CHNOPS) and iron (Fe; trace element; Fe also important to obtain cellular energy). Nutrition: CHNOPS Trace Elements: Iron (Fe)‚ Ni‚ Mg‚ Mo‚ Mn‚ Ca (important in humans due to osteoblastic activity)‚ Co Occupancy: beat out others for a spot to live‚ e.g. microbiota (normal flora) Resistance: defend against microbes‚ eukaryotes
Premium Cellular respiration Bacteria Adenosine triphosphate
Question Number. 4. If gauge pressure on a standard day at sea level is 25 PSI‚ the absolute pressure is. Option A. 39.7 PSI. Option B. 10.3 PSI. Option C. 43.8 PSI. Correct Answer is. 39.7 PSI. Explanation. Absolute pressure = gauge pressure plus atmospheric pressure. Atmospheric pressure at seallevel = 14.7 PSI. Question Number. 5. Pressure decreases. Option A.
Premium Atmospheric thermodynamics Troposphere Atmosphere
Problem statement: In 1976‚ PSI was given a contract by the government of Bangladesh to control the population explosion with Raja Brand Condoms and Maya brand oral contraceptives. Late in 1983‚ when PSI met to discuss the marketing strategies for 1984-86‚ they observed that Raja sales had steadily increased but Maya sales declined despite using the same marketing strategies for both the products. Why?? * 80% of all the contraceptive products are purchased by men. * People associated condoms
Premium Combined oral contraceptive pill Marketing
in turn‚ supported by the main suspension cables. The suspension cables then transferred the force into bridge towers. wofkim@yahoo.com ^^ Normal Stress Stress Stress is the expression of force applied to a unit area of surface. It is measured in psi (English unit) or in MPa (SI unit). Another unit of stress which is not commonly used is the dynes (cgs unit). Stress is the ratio of force over area. stress = force / area Simple Stresses There are three types of simple stress namely; normal stress
Premium Tensile strength Force Elasticity